Doorlock



Lil 7, 1931.

' R. N. SMITH DOORLOCK Filed ms 4, 1929 if M/ VENTOR.

zz/ IJ 1 v ATTORNEY [Patented July7, 193f i 1,813,092

I UNITED ST TES ROBERTN. SMITH, or KANSAS CITY, ivnssounrnssrenon or.oNE-nA mf'rofJAM'Es L.

- HOGIN, OF KANSAS CITY, KANSAS 'nooRL ooK it v i I A ncam m a November4 19 29. rsenal, N 4o4,ea5 ;1] I v 7 My invention relates toimprovements in handle and; the outside handle'yofthe lock, door locksIt relates particularly to looks a sa d handles being respect velyprovided with v of automobile doors, "shafts .7 and 8 oscillativelymounted .1n the One of the-objects of'my invention is-to casing 1; Thehandles 5 'and 6 are each c'onv 5 provide a door lock" with novel meansfor mated by me'chanisminot shown,and which 55 forcing the doorfiof anautomobile toward forms no partofmyi'invention,with the'bolt' the openposition when the door handle" is 3, whereby'said handlesmayflb eindependoperated to retract the bolt, thus making a ently operateddromthe inside and outside close fitting door easier to open. 7 i Trespectively of the car to retract the boltf3 10 A further object ofmyinvention is to profrom engagementwith the jalnb 4.

yide novel means of the kind described, which Onthe squaresha ftdi rfitted at the outer is simple, cheap, strong, durable, not likely sideofthe'casin'g, a c'ircular collar 9 on Which toget out of order, andwhich'is readily isloscillatively mounted a push memberlO' adaptedfordapplication to door locks of vthe having-a finger 11, whichis',movable through kind commonly used. v i a'slotl2 in the outsideedge'of'the oasingl, 65

Th 'ovel features of my lnvent on are Fig. a' intotravelling engagementwith a hereinafter fully described and cla1med, outwardly and downwardlyncl ned surface I In the Iaccompanying draw ngs, wj'fhlch 11' 18ofastgike plate l l fastened to the'janlllb uustrate 'p e re e 0 en 0 y'4in'an e ge recess'15 whichextends t t e 20 vei tion, i If doutersideof the jamb.

j I y 1g.v 1 an e evatlono my'improve When the 'pushmember lQisswungclockmechayrliism, loollrling towivlard the insildedof the Wise asviewed in Fig. 1,,the finger 11"will car 5 owing-t e mec anism app 1e toa travel downwardly on the inclined surface car door locl: of'usualtype, a partof the door 13 of the strike platev 14,- thereby' forcingthe and a portion of the adJacent amb bemg 1 1.- 2 t d the Open p iti hth 75 shown 1n vert1ca1"sect1on. i bolt 3 is retracted to clear thejamb-t.

F1g-'2 1S& n a g d l the 11116 a For so swinging the push member 10 when0f Flgalv v v the bolt 3 is retracted by the inside handle 5, 3 S aSec/51011 i9 11119 3 "the square shaft 7 of the latter has mounted V onit and oscillative therewith at the outer W Flg-A ,lgan d v tl 'n of flP side ofthecasi-ngLa crankt16, which extends zidfidteylvigg anygoimfgoi iling downwardly and adjacent to its lower end is V v v Y 7provided vwith atrans n zrse slot 17 1 through I :18 is an enlarg dsection on the 'line which, extends'aihqrizbntmliDin Whichis r 1slidablein the-slot 17 and which'ismounted 1 J in the adjacent endsZiftwo'horizontallinks a a; ten ment a other d by a nism when the latteris applied t6 another therpush member b w e Shaft j 40 'commontypeoflock. -2, v 'v 9.0

Fig. 7 is an edge elevation of a portion fl al ll la i g}; f g op k of ajamb provided with a strike plate, which l shown Sohd I l a w 8 P9 formsa part of my improved mechanism. wn dotted ll es' q fi mp crank 16',through the 1ntermed1acy-of-the Similarreferencecharacters designatesimi- I i v i V 1 a t i th diff t, i 'p1ns'18and 20 and thelinks 1 9,W111 swmgthe '95:.

1 designates a lockcasing of ordinary type push'memberlO clockwise, asviewed in Fig. shown mounted on a car door 2 and having '1,thus'f0roingthe finger'll into downwardly the usual bolt 3 adapted for engagement in'travellin'g'engagement with the inclined surthe usual manner with adoor jamb 4. "face 13 01: the strike plate-14, and forcing the 5 and 6designate respectively the inside doom toward 1 11601 31; pofltion asthe bolta 10 is retracted from the jamb by the actuation of the handle5, as described.

A coil spring 21, which is fastened at one end to the push member 10,above the shaft 8, and fastened at its other end to a pin 22 mounted inthe casing 1, between the shafts 7 and 8, normally exerts a tensiontending to retract the push member 10. As the links 19 are pivotallyconnected to the crank 16 and to the push member 10, the links willretract the push member to the release position in case the spring 21should break and become inoperative.

The lost motion provided by the sliding of the pin 18 in the slot 17, isto enable the handle 5 to be swung to the right, from the positionshownin solid lines in Fig. 1, for the purpose of locking the door by suchmovement of the handle, in looks of certain types, without actuating thepush member 10.

In other types of locks in which the inside handle is not employed tolock the door, the shaft 7 has mounted on it the crank 23, shown in Fig.6, in which case, the pin 18 is merely pivotally, and not slidablymounted in the crank 23, so that there is no lost motion between thecrank 23 and the links 19.

In the operation of the device, the operator in the car swings thehandle 5 from the position shown in solid lines in Fig. 1 to the dottedposition shown in said figure, thus retracting the bolt 3 and swingingthe push member, by means of the crank 16 or 23, as the case may be, thepins 18 and 20 and the links 19, so that the push member finger 11travels downwardly on the strike plate surface 13 and forces the dooropen.

As the door usually opens easily from the outside, the push member 10 ispivotally mounted on the shaft 8 by means of the collar 9 on which thepush member freely pivots, that the operatlon of the outside handle 6does not actuate the push member 10.

The spring 21 is employed, in the form shown in Figs. 1, 2 and 3, merelyto keep the push member 10 from any swinging movement when the handle 5is in the position shown in solid lines in Fig. 1, which might occur dueto' the lost motion connection of the crank 16 with the links 19. In theform shown in Fig. 6, the spring 21 may be dispensed with, if desired.

I do not limit my invention to the structures shown and described, asother modifications, than the one shown, may be made, within the scopeof the appended claims, without departing from the spirit of myinvention.

What I claim is 1. In a door lock, the combination with a jamb having astrikesurface and a door having a lock provided with a handle and a boltadapted to'engage said jamb and retractible therefrom by said handle,the latter having an oscillative shaft, of a crank on said handle shaft,a push member movable into travelling engagement with said surface, whensaid door is closed, and a link pivoted to said crank and to said pushmember arranged, when said handle retracts said bolt, to slide said pushmember on said surface in a direction such that the door will be forcedtoward the open position, said link being adapted to move said pushmember in the opposite direction to the release position of the latter.

2. In a door lock, the combination with a jamb having a strike surfaceand a door having a lock provided with a handle having an oscillativeshaft, the lock having a bolt retractible by said handle from engagementwith said jamb, of an oscillative push member on said door movable, whensaid door is closed, into and out of pushing engagement with said strikesurface, and arranged when forced against said surface to force saiddoor to ward the open position, a crank on said shaft, and a linkpivoted with a lost motion connection to said crank and pivoted to saidpush member for forcing the latter against said surface when said handleis operated to retract said bolt from said jamb, said link being adaptedto retract said push member from said surface to the release position ofsaid push member.

3. In a door lock, the combination with a lock casing, a bolt and twohandles oscillative independently of each other on said casing forretracting said bolt, of a push member oscillative on one of saidhandles to and from a position in which it is adapted to have pushingengagement with a door jamb, and means actuated by the other of saidhandles for forcing said push member to said position, when the lastnamed handle retracts said bolt.

4-. In a door lock, the combination with a lock casing, a bolt and twohandles oscillative on said casing for retracting said bolt, of a pushmember oscillative on one of said handles to and from a position inwhich it is adapted to have pushing engagement with a door jamb, a crankfastened to the other of said handles, and a link connecting said crankand said push member for forcing the latter to said position, when thehandle to which the crank is fastened is operated to retract said bolt.

In testimony whereof I have signed my name to this specification.

ROBERT N. SMITH.

